Army · SSN history

501 Title not stated in source

Appendix I lists Army SSN 501 as deleted, with SSN 405 as its suggested substitute. This establishes a deletion with a suggested replacement, not a confirmed merger or automatic conversion to 405.

Codes named in this history

Codes without a directory match

  • 405 stated by the source. No directory or archive record matches.

Documented history

Title not stated in source

The deletion date is not stated. June 30, 1945 is the publication date of Change 2, not an effective deletion date.

  • The table does not identify the specialty title for SSN 501.
Source extraction notes

Appendix I lists deleted SSN 501 with suggested substitute 405. The table does not print the deleted specialty title, so the neutral title placeholder is used. The row-level deletion date is unstated. The citation dates Change 2 to 30 June 1945; that publication date is not an effective deletion date.

Source documents (1)

Reviewed September 23, 2026 against references 1 and 2.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.